Muffler: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| 318, 323, 328, M3 | 1.1 | 0.8 | C | Includes: Exhaust Pipe. |
| 325, 330 | ||||
| Front | ||||
| Without Convertible | 1.3 | 1.0 | C | Includes: Exhaust Pipe. |
| With Convertible | 1.6 | 1.2 | C | Includes: Exhaust Pipe. |
| Intermediate | ||||
| Without Convertible | 1.3 | 1.0 | C | Includes: Exhaust Pipe. |
| Rear | ||||
| Without Convertible | 0.8 | 0.6 | C | Includes: Exhaust Pipe. |
| With Convertible | 1.6 | 1.2 | C | Includes: Exhaust Pipe. |